The study of his teeth clarified fundamental aspects about the evolution of the hominids and discovered the simultaneous evolution of genera, so that the Paranthropus line, moved away from others and in particular from that which evolved towards Homo.

Brushes, with a narrow mouth, and when there is great interest in not lifting any splinter, irons to brush or corrode must be striated in the direction of the length of iron, so that its song is bristling with a highly dentition thin and triangular teeth whose tip raises without lifting splinters.

There is no doubt that these conditions were sometimes overlooked because of the personal picaresque or the temporary needs of the army, but in general it was always demanded that the soldier be healthy and strong and that he had a good set of teeth feed on the hard biscuit that was distributed among the troops.

The most valuable item, however, was the beautiful girls, selected according to "their predilection for the blond and red-haired, Basque and Frankish redheads," usually also described with blue eyes, large breasts, broad hips, thick legs and perfect teeth "Provided the gynoecium of the royal family and the aristocracy as legitimate concubines and wives."